Any combination of transit and walking will likely be the best way to move between Nuit Blanche's free outdoor art exhibitions.

Subways will run all-night on the Bloor-Danforth subway line from Keele to Woodbine, and on the Yonge-University-Spadina line from St. Clair West to Eglinton.

GO Transit will also operate extra trains.

Drivers willing to brave the downtown streets should be aware of the following road closures:

Bay Street between Gerrard Street and Wellington Street.

Yonge Street from Dundas Street West to Wellington.

Church Street between Shuter Street and Front Street.

King Street between Jarvis and Peter.

Queen Street from Jarvis to University Ave.

Roads closed for Nuit Blanche will reopen by 10 a.m. Sunday.

Almost as much as the art, partying has become a big part of Nuit Blanche as many bars and restaurants have later-than-usual operating hours.

Toronto Police Const. Tony Vella said officers will be watching for any signs of trouble.

"If you have an open container of liquor, it's an infraction and you could be charged," he told CBC News on Saturday. "Our main priority is public safety, we want you to go out, have fun and enjoy yourself but also be reasonable as well."

Last year's Toronto Nuit Blanche drew an estimated turnout of one million people. Currently more than 25 cities internationally put on their own version of the "white night."